<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body {
            background: #f5f5f5;
        }

        div {
            width: 80px;
            background: #fff;
        }

        div a {
            display: block;
            height: 100px;
            line-height: 100px;
            text-align: center;
            text-decoration: none;
            color: #100a0a;
            font-size: 13px;
            /* 单独设置边框 */
            /* 下边框 */
            border-bottom: 1px red solid;
            /* 上边框 */
            border-left: 1px blue solid;
        }

        /* last-child会选取到最后一个a */
        div a:last-child {
            border: 0;
        }
    </style>
</head>

<body>
    <div>
        <!-- javascript:;取下a链接的默认跳转行为 -->
        <a href="javascript:;">手机APP</a>
        <a href="javascript:;">个人中心</a>
        <a href="javascript:;">售后服务</a>
        <a href="javascript:;">人工客户</a>
        <a href="javascript:;">购物车</a>
    </div>
</body>

</html>